异倍体

These DNA sequence changes might contribute to the rapid evolution of the newly formed allopolyploid and allow the divergent genomes to act in harmony.

杂种后代DNA序列的这种变化可能有利于新形成异源多倍体小麦的快速进化、遗传协调和遗传稳定性。

The properties of the hybrid, such as greater vigor and adaptability, are retained in the allopolyploid in subsequent generations and such organisms are often highly successful.

这种具有高度生活力和适应性的杂交在异源多倍体中被保留，而且可以成功的遗传下去。

Recent studies indicate that extensive genetic and epigenetic changes often occur at the early stage of allopolyploid\'s genome formation,these changes have played a significant role in stabilization of newly formed genome of species.

研究表明，异源多倍体在形成的早期会出现广泛的基因组遗传和表观遗传变化，这些变化直接关系到物种的形成和稳定。

Third,apomictic rice and C4 crop,were crossed to create new allopolyploid cultivars with high photosynthetic efficiency.

无融合生殖水稻和C4作物杂交创造高光效异源多倍体新作物。

We established the technical system to obtain the EST library of plant specific chromosome,which is important to gain the ESTs and genes located on specific chromosome and provide a new tools for complicated allopolyploid genome research.

本项目获得了建立植物特定染色体EST文库的技术体系，它对分离特定染色体的EST及克隆新基因有重要参考价值，也为异源多倍体植物基因组研究提供了新的技术手段。

The genomic changes occurred form F_1 and the greatest changes of sequence was occurred from S_0 generation to S_1 generation,while,there were miner changes from S_1 to S_2, which indicated that the allopolyploid genome became more stable following the selfing process and the sequence change was a rapid event.

但在S_1到S_2代基因组序列变化比率基本接近，暗示了伴随着异源双二倍体的自交过程，早期基因组表现出稳定的趋势，说明基因组序列变化是一个快速的事件。

Methylation variations of artificial F4 and F10 generations of Raphanus sativus×Brassica alboglabra allopolyploid were examined with MSAP. The results showed that the methylation levels of F4, F10 were 30.61% and 33.10%, respectively.

以人工合成的萝卜－芥蓝异源四倍体的F4和F10世代为材料，用MSAP法检测2种材料DNA甲基化变异情况，以期为远缘杂交后不同世代间基因组DNA甲基化遗传和变异规律提供实验依据。

SYNTHESIS OF TWO AUTO-ALLOHEXAPLOIDS FROM BRASSICA NAPUS L. AND ITS TWO PRIMARY SPECIES

欧洲油菜与其两个基本种间的两种同源异源六倍体的合成

However, as a hexaploid species, this study was hampered by the complexity of the wheat genome.

然而，普通小麦作为异源六倍体物种，其基因组的复杂性为功能基因分子标记的开发带来了极大的困难，因此研究在普通小麦中开发SNP标记同样也具有重要的理论意义。

Hexaploid wheat has a lot of homoelogous gones in its genomes, and the main objective of wheat breeding is to get good phenotypes.

小麦是异源六倍体，其染色体组中存在着大量的同源基因，其育种的主要目标是获得可遗传的优良性状。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。